# -*- coding: utf-8 -*-
"""
Created on Mon Jun 14 23:15:58 2021

@author: bwh
"""
TempStr = input("请输入带有符号的温度值: ") 
if TempStr[-1] in ['F', 'f']:
     C = (eval(TempStr[0:-1]) - 32)/1.8
     print("转换后的温度是{:.2f}C".format(C))
elif TempStr[-1] in ['C', 'c']:
     F = 1.8*eval(TempStr[0:-1]) + 32
     print("转换后的温度是{:.2f}F".format(F)) 
else:     print("输入格式错误")